powderИзвестия вузов. Порошковая металлургия и функциональные покрытияPowder Metallurgy аnd Functional Coatings (Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional'nye Pokrytiya)1997-308X2412-8767НИТУ "МИСИС"10.17073/1997-308X-2024-5-19-29powder-919Research ArticleТугоплавкие, керамические и композиционные материалыRefractory, Ceramic, and Composite MaterialsВысокоэнтропийные покрытия в системе FeCrNiCo–Mox с повышенной коррозионной и трибокоррозионной стойкостью в морской водеHigh-entropy coatings in the FeCrNiCo–Mox system with enhanced corrosion and tribocorrosion resistance in seawaterhttps://orcid.org/0000-0003-2585-0733КупцовК. А.KuptsovK. A.

Константин Александрович Купцов – к.т.н., ст. науч. сотрудник  Научно-учебного центра (НУЦ) СВС МИСИС–ИСМАН

Россия, 119049, г. Москва, Ленинский пр-т, 4, стр. 1

Konstantin A. Kuptsov – Cand. Sci. (Eng.), Senior Researcher of the Scientific-Educational Center of SHS of MISIS–ISMAN

1 Bld, 4 Leninskiy Prosp., Moscow 119049, Russia

kuptsov.k@gmail.comhttps://orcid.org/0000-0001-6817-5999ФатыховаМ. Н.FatykhovaM. N.

Мария Николаевна Фатыхова – к.т.н., мл. науч. сотрудник  НУЦ СВС МИСИС–ИСМАН

Россия, 119049, г. Москва, Ленинский пр-т, 4, стр. 1

Mariya N. Fatykhova – Cand. Sci. (Eng.), Junior Researcher of the Scientific-Educational Center of SHS of MISIS–ISMAN

1 Bld, 4 Leninskiy Prosp., Moscow 119049, Russia

mariya.antonyuck@ya.ruhttps://orcid.org/0000-0003-3704-515XШевейкоА. Н.SheveykoA. N.

Александр Николаевич Шевейко – науч. сотрудник  НУЦ СВС МИСИС–ИСМАН

Россия, 119049, г. Москва, Ленинский пр-т, 4, стр. 1

Aleksandr N. Sheveyko – Researcher of the Scientific-Educational Center of SHS of MISIS–ISMAN

1 Bld, 4 Leninskiy Prosp., Moscow 119049, Russia

sheveyko@mail.ruИсламовР. Т.IslamovR. T.

Рафаэль Тагирович Исламов – лаборант-исследователь кафедры порошковой металлургии и функциональных покрытий

Россия, 119049, г. Москва, Ленинский пр-т, 4, стр. 1

Rafael T. Islamov – Research Assistant of the Department of Powder Metallurgy and Functional Coating

1 Bld, 4 Leninskiy Prosp., Moscow 119049, Russia

livinoe@bk.ruhttps://orcid.org/0000-0001-6934-9137ЗайцевА. А.ZaitsevA. A.

Александр Анатольевич Зайцев – к.т.н., ст. науч. сотрудник лаборатории «In situ диагностика структурных превращений» НУЦ СВС МИСИС–ИСМАН

Россия, 119049, г. Москва, Ленинский пр-т, 4, стр. 1

Aleksandr A. Zaitsev – Cand. Sci. (Eng.), Senior Researcher of the Laboratory “In situ diagnostics of structural transformations” of the Scientific-Educational Center of SHS of MISIS–ISMAN

1 Bld, 4 Leninskiy Prosp., Moscow 119049, Russia

aazaitsev@bk.ruhttps://orcid.org/0000-0001-7304-2461ШтанскийД. В.ShtanskyD. V.

Дмитрий Владимирович Штанский – д.ф.-м.н., заведующий научно-исследовательским центром «Неорганические наноматериалы» НИТУ МИСИС, гл. науч. сотрудник НУЦ СВС МИСИС–ИСМАН

Россия, 119049, г. Москва, Ленинский пр-т, 4, стр. 1

Dmitriy V. Shtansky – Dr. Sci. (Phys.-Math.), Head of the Research Center “Inorganic Nanomaterials” of NUST MISIS, Chief Researcher of the Scientific-Educational Center of SHS of MISIS–ISMAN

1 Bld, 4 Leninskiy Prosp., Moscow 119049, Russia

shtansky@shs.misis.ruНациональный исследовательский технологический университет «МИСИС»РоссияNational University of Science and Technology “MISIS”Russian Federation2024271020241851929Copyright © НИТУ "МИСИС", 20242024НИТУ "МИСИС"НИТУ "МИСИС"https://powder.misis.ru/jour/about/submissions#copyrightNoticehttps://powder.misis.ru/jour/article/view/919

Для решения актуальной проблемы защиты стальных изделий морской и прибрежной инфраструктуры от коррозии и трибокоррозии были разработаны высокоэнтропийные покрытия в системе FeCrNiCo–Mox , получаемые методом автоматизированного электроискрового легирования в вакууме с использованием специальной установки. В качестве подложек применялись диски диаметром 30 мм из стали 30Х13. Для нанесения покрытий использовались электроды CrNiCo–xMo, где x = 0, 5, 10 и 15 ат. %, полученные методом порошковой металлургии. Структуру, элементный и фазовый составы покрытий оценивали методами РФА, СЭМ и ЭДС. За счет переплава материала подложки и электрода были получены покрытия FeCrNiCo–Mox . Покрытия с умеренной долей молибдена (2–5 ат. %) представляют собой однофазный твердый раствор с ГЦК-решеткой. При содержании Mo около 7 ат. % наблюдается формирование второй фазы на основе молибдена с ОЦК-решеткой. Толщина покрытий FeCrNiCo составляла 45 мкм, введение молибдена в состав покрытий приводило к ее снижению до 32–34 мкм. Оценка коррозионной и трибокоррозионной стойкости покрытий осуществлялась в искусст­венной морской воде электрохимическими и трибологическими методами. В стационарных коррозионных условиях покрытие с 2 ат. % Mo характеризовалось наибольшей коррозионной стойкостью: коррозионный потенциал составлял 50 мВ, плотность тока коррозии – 2 мкА/см2. В трибокоррозионных условиях наибольшей износостойкостью на уровне 2·10–5 мм3/(Н·м) обладало покрытие с 5 ат. % молибдена.

To tackle the pressing challenge of protecting steel products in marine and coastal infrastructure from corrosion and tribo­corrosion, high-entropy coatings in the FeCrNiCo–Mox system were developed using automated vacuum electrospark deposition with specialized equipment. Discs with a diameter of 30 mm made from 30Kh13 steel were used as substrates. The coatings were applied using FeCrNiCo–Mox electrodes, where x = 0, 5, 10, and 15 at. %, produced by powder metallurgy. The structure, elemental, and phase compositions of the coatings were evaluated using XRD, SEM, and EDS methods. FeCrNiCo–Mox coatings were obtained through the remelting of the substrate and electrode material. Coatings with a moderate molybdenum content (2–5 at. %) formed a single-phase solid solution with an FCC lattice. At a Mo content of around 7 at. %, the formation of a second phase based on molybdenum with a BCC lattice was observed. The thickness of the FeCrNiCo coatings was 45 µm, while the addition of molybdenum to the coatings reduced this thickness to 32–34 µm. The corrosion and tribocorrosion resistance of the coatings was assessed in artificial seawater using electrochemical and tribological methods. Under stationary corrosion conditions, the coating with 2 at. % Mo exhibited the highest corrosion resistance, with a corrosion potential of 50 mV and a corrosion current density of 2 µA/cm2. Under tribocorrosion conditions, the coating with 5 at. % molybdenum demonstrated the highest wear resistance, with a value of 2·10–5 mm3/(N·m).

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The authors declare that there are no conflicts of interest present.